iser-target: Remove explicit mlx4 work-around

The driver now exposes sufficient limits so we can
avoid having mlx4 specific work-around.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index dfbbbb28090b2301c7742fd28b145b62054a76af..8a51c3b5d657e5a49ae50c4e5f104a7298d732f2 100644 (file)
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -157,16 +157,9 @@ isert_create_qp(struct isert_conn *isert_conn,
        attr.recv_cq = comp->cq;
        attr.cap.max_send_wr = ISERT_QP_MAX_REQ_DTOS;
        attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS + 1;
-       /*
-        * FIXME: Use devattr.max_sge - 2 for max_send_sge as
-        * work-around for RDMA_READs with ConnectX-2.
-        *
-        * Also, still make sure to have at least two SGEs for
-        * outgoing control PDU responses.
-        */
-       attr.cap.max_send_sge = max(2, device->dev_attr.max_sge - 2);
-       isert_conn->max_sge = attr.cap.max_send_sge;
-
+       attr.cap.max_send_sge = device->dev_attr.max_sge;
+       isert_conn->max_sge = min(device->dev_attr.max_sge,
+                                 device->dev_attr.max_sge_rd);
        attr.cap.max_recv_sge = 1;
        attr.sq_sig_type = IB_SIGNAL_REQ_WR;
        attr.qp_type = IB_QPT_RC;